Mary Burns (1821–1863) was an Irish partner of Friedrich Engels.

Mary Burns may also refer to:

Mary Burns (soldier), soldier in the United States Civil War Mary Burns Laird (?–1944), Scottish feminist activist Marilyn Burns (Mary Lynn Ann Burns, 1950–2014), American actress Mary Harcourt, Viscountess Harcourt (1874–1961), born Mary Ethel Burns

See also Sister Mary Grace Burns Arboretum, Lakewood Township, New Jersey, USA Mary Burns, Fugitive, a 1935 film Mary Byrne (disambiguation)